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Detecting changes in natural resources using Land Condition Trend Analysis data.

Alan B Anderson1

  • 1U.S. Army Engineering Research Development Center, Construction Engineering Research Laboratory, Champaign, Illinois 61826-9005, USA.

Environmental Management
|February 7, 2002
PubMed
Summary
This summary is machine-generated.

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The US Army’s Land Condition Trend Analysis (LCTA) program effectively monitors natural resources. Power analysis confirms LCTA protocols detect environmental changes across diverse Army installations.

Area of Science:

  • Environmental monitoring
  • Natural resource management
  • Ecological assessment

Background:

  • The US Army utilizes the Land Condition Trend Analysis (LCTA) program for standardized natural resource inventory and monitoring.
  • Effective natural resource management relies on the LCTA program's ability to detect changes in environmental conditions.

Purpose of the Study:

  • To quantify the capability of LCTA protocols in detecting changes in natural resources.
  • To estimate the minimum detectable effect sizes (MDES) for key management variables within LCTA programs.

Main Methods:

  • Power analysis techniques were employed to estimate MDES.
  • Data from 27 Army installation LCTA programs were analyzed.
  • Selected primary and secondary management variables were assessed.

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Main Results:

  • Minimum detectable effect sizes (MDES) varied significantly across different variables and installations.
  • LCTA programs at larger installations with lower sampling intensity demonstrated comparable change detection to smaller, more intensively sampled sites.
  • The LCTA protocols provide consistent monitoring data despite variations in resources and implementation.

Conclusions:

  • The LCTA program's protocols are effective in detecting natural resource changes across various Army installations.
  • Sampling intensity and installation size did not significantly impede the LCTA program's ability to detect environmental trends.
  • The LCTA program serves as a reliable national monitoring system for tracking natural resource conditions.